CVE-2023-28444
angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend
angular-server-side-configuration helps configure an angular application at runtime on the server or in a docker container via environment variables. angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file). With version 15.0.0 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html. This has NO IMPACT, in a plain Angular project that has no backend component. This vulnerability has been mitigated in version 15.1.0, by adding an option searchPattern which restricts the detection file range by default. As a workaround, manually edit or create ngssc.json or run script after ngssc.json generation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
9.9
angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend
angular-server-side-configuration helps configure an angular application at runtime on the server or in a docker container via environment variables. angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file). With version 15.0.0 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html. This has NO IMPACT, in a plain Angular project that has no backend component. This vulnerability has been mitigated in version 15.1.0, by adding an option searchPattern which restricts the detection file range by default. As a workaround, manually edit or create ngssc.json or run script after ngssc.json generation.
- Record
CVE-2023-28444- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-538, CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2023-1019
9.9
angular-server-side-configuration helps configure an angular application at runtime on the server or in a docker container via environment variables. angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file). With version 15.0.0 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html. This has NO IMPACT, in a plain Angular project that has no backend component. This vulnerability has been mitigated in version 15.1.0, by adding an option searchPattern which restricts the detection file range by default. As a workaround, manually edit or create ngssc.json or run script after ngssc.json generation.
- Record
EUVD-2023-1019- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-gwvm-vrp4-4pp5
9.9
angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend
Impact
angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory. During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file).
With version 15 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html.
This has NO IMPACT, in a plain Angular project that has no backend component.
Patches
Vulnerability has been mitigated in 15.1.0, by adding an option searchPattern which restricts the detection file range by default.
# Update via npm
npm update angular-server-side-configuration
## Or more specific
npm install [email protected]
# Update via pnpm
pnpm update angular-server-side-configuration
## Or more specific
pnpm add [email protected]
# Update via yarn
yarn update angular-server-side-configuration
## Or more specific
yarn add [email protected]
Workarounds
Manually edit or create ngssc.json or run a script after ngssc.json generation
References
- Record
GHSA-gwvm-vrp4-4pp5- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-200, CWE-538
- Updated
- 2026-11-02
NVD
9.9
angular-server-side-configuration helps configure an angular application at runtime on the server or in a docker container via environment variables. angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file). With version 15.0.0 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html. This has NO IMPACT, in a plain Angular project that has no backend component. This vulnerability has been mitigated in version 15.1.0, by adding an option searchPattern which restricts the detection file range by default. As a workaround, manually edit or create ngssc.json or run script after ngssc.json generation.
- Record
CVE-2023-28444- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200, CWE-538
- Updated
- 2026-11-02
OSV
9.9
angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend
angular-server-side-configuration helps configure an angular application at runtime on the server or in a docker container via environment variables. angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file). With version 15.0.0 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html. This has NO IMPACT, in a plain Angular project that has no backend component. This vulnerability has been mitigated in version 15.1.0, by adding an option searchPattern which restricts the detection file range by default. As a workaround, manually edit or create ngssc.json or run script after ngssc.json generation.
- Record
CVE-2023-28444- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-200, CWE-538
- Updated
- 2026-11-02
OSVGHSA-gwvm-vrp4-4pp5
9.9
angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend
Impact
angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory. During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file).
With version 15 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html.
This has NO IMPACT, in a plain Angular project that has no backend component.
Patches
Vulnerability has been mitigated in 15.1.0, by adding an option searchPattern which restricts the detection file range by default.
# Update via npm
npm update angular-server-side-configuration
## Or more specific
npm install [email protected]
# Update via pnpm
pnpm update angular-server-side-configuration
## Or more specific
pnpm add [email protected]
# Update via yarn
yarn update angular-server-side-configuration
## Or more specific
yarn add [email protected]
Workarounds
Manually edit or create ngssc.json or run a script after ngssc.json generation
References
- Record
GHSA-gwvm-vrp4-4pp5- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-200, CWE-538
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
angular-server-side-configurationnpm |
15.0.0 up to 15.1.0 | 15.1.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-28444 is a critical vulnerability (CVSS 9.9) in Angular-server-side-configuration Project Angular-server-side-configuration, published March 24, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.76%, the 55th percentile. Fixed in angular-server-side-configuration 15.1.0.
References
github.com/kyubisation/angular-server-side-configuration/security/advisories/GHSA-gwvm-vrp4-4pp5
github.com/kyubisation/angular-server-side-configuration/commit/d701f51260637a84ede278e248934e0437a7ff86
github.com/kyubisation/angular-server-side-configuration/releases/tag/v15.1.0
nvd.nist.gov/vuln/detail/CVE-2023-28444
github.com/advisories/GHSA-gwvm-vrp4-4pp5
github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28444.json
github.com/kyubisation/angular-server-side-configuration